Circuit Operation

The SRS (Supplemental Restraint System) is a driver and passenger protection device which has a supplemental role to the seat belts.

When the ignition SW is turned to "ACC" or "ON":
- Current from the "FR CIG" fuse flows to terminal 10 of the airbag sensor assembly.
- Only when the ignition SW is "ON" does the current flow from the IGN fuse to terminal 9.

If an accident occurs while driving, when the frontal impact exceeds a set level:
- Current from the "FR CIG" or "IGN" fuse flows to terminals 4 and 2 of the airbag sensor assembly
--> terminal 1 of the airbag squib
--> terminal 2
--> terminals 3 and 1 of the airbag sensor assembly
--> terminal 5, terminal 6 or body ground
--> ground, so that current flows to the airbag squibs and causes them to operate.

The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver. The airbag stored inside the passenger's instrument panel is instantaneously expanded to soften the shock to the passenger.